BS EN 28738-1992 Plain washers for clevis pins - Product grade A《U形销的平垫圈 A级产品》.pdf
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1、BRITISH STANDARD BS EN 28738:1992 ISO8738:1986 Plain washers for clevis pins Product grade A The European Standard EN28738:1992 has the status of a British Standard UDC621.882.4BSEN28738:1992 This British Standard, having been prepared under the directionof the General Mechanical Engineering Standar
2、ds Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15October1992 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference GME/9 Draft for comment85/73843 DC ISBN 0 580 21317 X Cooperating organizations The Europ
3、ean Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finla
4、nd Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Un
5、ificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Assoc
6、iation suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN28738:1992 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN28738 3 National annex NA (informati
7、ve) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN28738:1992 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the General Mechanical Engineering Standards Policy Committee and is the Engli
8、sh language version of EN28738:1992 Plain washers for clevis pins Product gradeA, published by the European Committee for Standardization (CEN). It is identical with ISO8738:1986 published by the International Organization for Standardization (ISO). EN28738:1992 was produced as a result of internati
9、onal discussions in which the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity
10、 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indica
11、ted in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN28738 July1992 UDC621.882.4:621.882.6 Descriptors: Fasteners, hinge pins, washers, plain washers, specifications, dimensions, designation English version Plain washers for clevis pins Product gra
12、de A (ISO8738:1986) Rondelles plates pour axes darticulation Grade A (ISO8738:1986) Scheiben fr Bolzen Produktklasse A (ISO8738:1986) This European Standard was approved by CEN on1992-07-17. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
13、giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official v
14、ersions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgiu
15、m, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassa
16、rt 36, B-1050 Brussels 1992 Copyright reserved to CEN members Ref. No. EN28738:1992 EEN28738:1992 BSI 12-1999 2 Foreword In1992, CEN Technical Committee CEN/TC185 “Threaded and non threaded mechanical fasteners and accessories” the secretariat of which is held by DIN decided to submit the Internatio
17、nal Standard ISO8738:1986 “Plain washers for clevis pins Product grade A” to the formal vote procedure. The result was positive. In the countries bound to implement this European Standard a national standard identical to this European Standard shall be published at the latest by1993-01-31 and confli
18、cting national standards shall be withdrawn at the latest by1993-01-31. According to the CEN/CENELEC Common Rules the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norw
19、ay, Spain, Portugal, Sweden, Switzerland and UnitedKingdom. Contents Page Foreword 2 1 Scope and field of application 3 2 References 3 3 Dimensions 4 4 Specifications and reference International Standards 5 5 Designation 5EN28738:1992 BSI 12-1999 3 1 Scope and field of application This International
20、 Standard specifies the characteristics of plain washers for clevis pins according to ISO2340 and ISO2341. Plain washers in accordance with this International Standard shall be used on the cotter pin end only. 2 References ISO2081, Metallic coatings Electroplated coatings of zinc on iron or steel. I
21、SO2340, Clevis pins without head. ISO2341, Clevis pins with head. ISO3269, Fasteners Acceptance inspection. ISO4520, Chromate conversion coatings on electroplated zinc and cadmium coatings. ISO4759-3, Tolerances for fasteners Part3: Washers for metric bolts, screws and nuts with thread diameters fro
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